The ion formed when mercury looses two electrons is Hg^2+
An ion is formed when a chemical specie looses or gains electrons. The ion is positive if electrons are lost and the ion is negative when electrons are gained.
Mercury is a metal hence it is electropositive. It looses electrons easily. As such, when mercury looses two electrons, it forms the ion Hg^2+.
Hence, when mercury looses two electrons, it forms Hg^2+
Learn more; https://brainly.com/question/11527546
